[Gdal-dev] RFC 12: Improved File Management

[Ari Jolma]

Ray Gardener kirjoitti:
> Hmm... I'm partial to the opposite route: abstracting away details 
> like the structure of datasets, since they're driver-dependant. Do 
> callers really need to know how datasets are organized? Is it even a 
> warranted assumption that the data is on a filesystem? The more we get 
> away from a black box model, the more maintenance it's going to be; 
> the API surface area keeps going up and increases the combinatorial 
> effects. No offence, but an RFC like this seems more like solving a 
> symptom instead of a root cause.
>
> GDAL should do all file and filesystem I/O as callbacks, and a utility 
> reference library built on top that implements the callbacks for 
> common cases like C stdlib I/O, GUI filesys browsers, etc. The more 
> GDAL continues to know about files and filesys details, the more 
> painful it's going to get.


Ray,

I don't quite get your point. Isn't it one of GDAL's main tasks to know 
about files and their details (or WCS data sources for that matter)?

I think this RFC with the "fast identify" allow us tool developers to 
build GUIs that let the users not to worry about those details - this is 
in my opinion a good thing, they just want to know which raster layers 
are available in a given data source. This is similar to what already 
can be done with OGR.

Regards,

Ari


>
> Ray
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-- 
Prof. Ari Jolma
Geoinformaatio- ja paikannustekniikka / Geoinformation and positioning
Teknillinen Korkeakoulu / Helsinki University of Technology
tel: +358 9 451 3886 address: POBox 1200, 02015 TKK, Finland
Email: ari.jolma at tkk.fi URL: http://www.tkk.fi/~jolma